Reamer.



J. MUTH, W. E. KELLYK; 0. P. HEINKEL.

REAMER.

APPLICATION FILED FEB. 20, 1908.

Patented Aug. 24, 1909.

JM/M

UNITED STATES PALIENT OFFICE.

JOHN IU'I'H, WILLIAM E. KELLY, CHRISTIAN-F. mm, 01' CZLEVIELAIITID,OHIO, ASSIGNORS TO THE nLLY TOOL COMPANY, OF CLEVELAND, OHIO,A'GOBPORATION OF OHIO.

REAMIB.

Specification of Letters iatcnt. Y Patented Aug. 24, 1909.

Application filed. February 20, 1908. Serial No. 416,909. I

To all whom it may concern:

Be it known that we, JOHN Morn, WIL- LIAM E. KELLY, and Cnms'rniri F.HEINKEL, citizens of the United States, residing at Cleveland, in thecounty of Cuyahoga and State of Ohio, have invented a new and usefulImprovement in .Reamers, of which the following is a specification.

Our invention relates to improvement in reamer, which can be used eitheras a solid or as a floating reamer, and in which a block carries aplurality of angularly placed and inde endently adjustable cutters;

e are aware, that reamers have been .made and patented which have ablock and which will float, but could not be used as. either solid orfloating reamer without extra parts and cost; we are further aware, thatreamers-have been made and patented with angularly placed, but notindependently adjustable cutters; we are further aware, that reamershave been made and patented with independently adjustable, but notangularly placed cutters; these reamers can not be made of smalldiameter, nor do they allow of large scope of adjustment, or of nicetyof adjustment. A

' The object of our improvement 1s: first, a

chea and simple reamer; second, a reamer whic has greater scope ofad'ustment and more accuracy of adjustment t an the reamers now in use;third, a reamer which may be used either as a solid or as a floatingreamer; fourth, a reamer in which the cutters may be made small, and maybe easily and independently sharpened or replaced; and fifth, a rcamerwhich can be made of small diameter. We attain these objects b mountingthe cutters on opposite sides an at an angle with a block; by placingthe cutters on opposite sides of a block we are able to make a reamer ofsmall diameter, because the cutter on one side of block will notinterfere with cutter on other side of same block; by placing thecutters at an angle we attain nicer ad ustment, the adjusting screws actdirectly a ainst cutting face of reamer, and, as is wel known in theart,a reamer, in order to slze holes accuratel must have its cutterssecurely fasobtaining a longer bearing face, an

when high priced steel is used for cutters;

we"attain the object of using our reamer either as a solid or as afloating reamer by the use of one stem, thussaving stems, since one stemmay be used for any numberof reamers, and any or all of these reamersmay be used as either solid or floating by manipulating one screw. y

Reference is to be had to the drawings, in which: Figure I is a generalplan-view of reamer proper, without stem, showing arrangement of parts.Fig. II is a section on line a::c, showing cutters and adjusting screws.Fig. III is a. general end-view, showing relative location of cutters inblock. Fig. IV is a section on line y y, showing one method of clam ingcutters in block. Fig. V shows screw or securing the block rigidly andcentrally to the stem; for use as a SOlId reamer. Fig. VI is a sectionof locking-device for small reamers, where one looking-screw only can beused. Fig. VII is a general View of complete reamer, partly broken away,to show method of holding the 'block whe the reamer is used as afloating Similar numerals refer to similar parts throughout the severalviews.

, The block 1, shown in Fig. I, is made rectangular or square; isprovided with grooves 2, for the purpose of receiving cutters 3; is alsoprovided with openings 4, for the purpose of allowing the tool to runoff when planing or milling said grooves 2 and to facilitate tapdpingfor adjusting-screws 5; is also provide with openings 6, for the purposeof receiving clamping-bushing 7 and clampingscrew 8; is also providedwith counterbore 9,

for the purpose of receivin end of holdingscrew 10; and is also provi edwith countersink 11, for the purpose of receiving point of locking-screw12. The said cutters 3 are placed on opposite sides of said block 1, andat an angle with center-line of said block 1, and said cutters 3 are,preferably, beveled on each side, and said ooves 2 are'made to fit, asshown in Figs. I and VI; said cutters 3 center-line of said block 1 forthe larger sizes of reamers, for a smaller size one opening oncenter-line of said block 1 will answer, and for the very small sizestwo openings are needed, and they will be located, respectively, onopposite sides of center-line of said block 1 than the openings showninFig. I this is not shown in the drawing but may be understood easily.'Said adjusting-screws 5 are for the purpose 0 adjusting said cutters 3independently. The preferred clampingdevice consists of saidclamping-bushing 7 and said clamping-screw 8; said clampingbushing -7 ismade cylindrical, has one-beveled spot 13 to fit side of said cutter3,-and is threaded to receive said clamping-screw 8; this clampingdevice, shown in Fig. IV, is for the larger sizes of reamers, for thesmaller sizes. of reamers the said cutters 3 come closer together andone clamping device only is possible to clamp said cutters 3; thisclamping device is shown in Fig. VI and consists of twoclamping-bushings 7 and 7. f and one clamping-screw 8; saidclamping-bushing 7 is made the same way. as clampingbushing 7 previouslydescribed but said clampingbushing 7 is not threaded, but is drilled andcountersunk to fit head of clamping-screw 8.; for the smallest .sizes ofreamers, said cutters 3 overlap each other, there will not be room forthe clamping device shown in Figs. IV and VI, and we then use clampingmethod shown in Fig. VIII, which consists 'of one or two clamping-screws14 and 14 for each cutter; one clamping-screw 14 only may be used, buttwo hold better; this clampingmethod may-be used on all sizes ofreamers, but we prefer to use the clamping device previously described,wherever possible. Said 'counterbore 9 is made larger in diameter thanthe end of said holdingcrew 10, so that said block 1 may have la eralmovement, or what is commonly called floating; said holding-screw'10 isscrewed up to bottom of said counterbore 9 so, that said block 1 mayslide easily, butmay notbind, and to prevent said block 1 from'tipping,or said cutters 3 from dig 1guiln; check-nut 15 is for the purpose of 00g said holdingi screw 10.when properly adjusted; this arallows saidblock 1 to tion of saidope rang 'ment constitutes a floating reamer. Sailocking-screw 12. screws into end of stem 16, is pointed to fit saidcountersink 11 and is for the purpose of'locking said block 1 centrallyand firmly; this arrangement constitutes a solid reamer. Said stem 16-is made to fit any desired machine at one end; the other end is providedwith a slot, which ass through easily, and is also provided wit athreaded hole to receive said holding-screw 10 o'rsaid lockingscrew' 12.up against a shoulder, we construct one end 0 said stem 16 as showninFig. X; said slot, which receives said block1,'is placed close to' Incase the reamer is to be used the end of said stem 16, or said slot maybe open on end of said stem 16 and a cap may or a may not be placed oversaid slot said stem 16 is provided with 'a suitable opening, near itsend to receive pin 17; the opening in said block 1, in this case, istaper, and it will be seen that, when said screw 17 is screwed in tight,said block 1 with said cutters 3 will be held centrally and firmly, asin a solid reamer, but when said screw 17 is screwed back, or loosened,any desired amount of float, within the limit of saidscrew- 17, may be,obtained; the methods of adjustingeand clamping 'of said cutters 3 inthis case 1s the same as previously described. Having thus described ourinvention, we claim:

1. A reamer comprising a block; independently adjustable cutters fittinginto angularly placed grooves on opposite sidesof said block; a clampingdevice for said outters; and adjusting-screws for, and placed in linewith, said cutters.

g 2. In a reamer the combination of a block with its cutters, -a stem,and means for either floating-lyor rigidly and centrally securing saidblock to said stem; said means consisting of a pin, an opening in saidblock, and an opening in said stem, said pin having a taper portionengaging in said opening in said lock, astraight portion engaging in aporin" said stem, and a straight and threadediportion engaging in theother portion of said ;ope'ning in said stem.

' JOHN -MUTH-.-i'

- WM. E. KELLY. v I CHRISTIAN F. HEINKEL. Witnesses:

ALBERT SOULECK, FRANK S. SMITH.

